1. Religion and gay marriage
We do have to talk about religion in a gay marriage thread. It's a major block for the legality of gay marriage.
2. Marriage is for having kids. Gays can't have kids
Well, a hetero couple can get married and not have kids. This argument does not work.
3. Christian nation
No, not at all. Just because the teachings of a religion might happen to include basic common sense, doesn't mean it was founded on them. Could someone at least explain which principles are "from" Christianity?